president obama already faces a serious new foreign policy challenge. there's word today from the pentagon that in the closing days of the election campaign iranian jets fired on a u.s. drone. let's get the details from our pentagon correspondent barbara starr. what are you learning, barbara? >> wolf, it was last thursday just one week ago we now know two iranian russian made jets very workable flew out into the persian gulf into international air space according to the pentagon and fired at a predator drone, a u.s. air force predator drone that the pentagon says was on a routine surveillance mission. although that mission was classified. here's what the pentagon had to say about it all. >> we believe this is the first time that an unmanned aircraft has been shot at over international waters in the arabian gulf. >> is that an act of war? >> i'm not going to get into legal labels. the reality is that we have a wide range of options as i said before to protect our assets and our forces in the region and will do so when necessary. we have communicated to t